问题
单项选择题
装配图的技术要求是用符号和文字说明机器的（）。
A、公差与配合要求，检验与使用要求等
B、装配与调整要求、试验与评定要求等
C、安装与运转要求、检验与评定要求等
D、装配与调整要求、检验与使用要求等
答案
参考答案：D
搜题请搜索小程序“爱下问搜题”
装配图的技术要求是用符号和文字说明机器的（）。
A、公差与配合要求，检验与使用要求等
B、装配与调整要求、试验与评定要求等
C、安装与运转要求、检验与评定要求等
D、装配与调整要求、检验与使用要求等
参考答案：D
Everyone needs friends. We all like to close to someone. It is nice to have a friend to talk, laugh and do things with. , sometimes we need to be alone. We don’t always want people . But we would feel lonely if we never had a friend. No two people are . Friends sometimes don’t get on well. That doesn’t mean they no longer like each other. Most of the time they will make up(言归于好)，and become again. Sometimes friends move away. Then we feel very . We miss them very much, but we can them and write to them. It could be possible that we could even see them again. And we can also new friends. There’s more good news for people who have friends. They live longer than people who don’t have. Why? It could be that they are . Being happy helps you stay well and it could be good just knowing that someone cares about you.
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